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Will it freeze in Loudon in the next 7 nights?
No overnight lows at or below 32°F are forecast in Loudon during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 47°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 47°F Above 36°F · Partly Cloudy
- Fri, Nov 6 43°F Above 36°F · Partly Cloudy
- Sat, Nov 7 35°F Frost possible · Partly Cloudy
- Sun, Nov 8 35°F Frost possible · Mostly Clear
- Mon, Nov 9 37°F Above 36°F · Partly Cloudy
- Tue, Nov 10 38°F Above 36°F · Partly Cloudy
- Wed, Nov 11 40°F Above 36°F · Partly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Loudon
The median first fall hard-freeze date (28°F) is November 12, from NOAA’s 1991–2020 Climate Normals at Lenoir City. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Apr 3 · Apr 18 · May 5 | Oct 12 · Oct 25 · Nov 5 | 188 days |
| 32°F freeze | Mar 19 · Apr 5 · Apr 21 | Oct 20 · Nov 1 · Nov 15 | 210 days |
| 28°F hard freeze | Mar 6 · Mar 25 · Apr 9 | Oct 31 · Nov 12 · Dec 1 | 233 days |
Average high temperature by month
1991–2020 normals at Lenoir City
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Loudon, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Lenoir City (station USC00405158, elevation 785 ft), 6.6 mi from Loudon. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Loudon
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Lenoir City, TN | 6.8 mi | Apr 5 | Nov 1 |
| Sweetwater, TN | 11 mi | Apr 10 | Oct 27 |
| Kingston, TN | 12 mi | Apr 3 | Nov 4 |
| Farragut, TN | 14 mi | Apr 5 | Nov 1 |
| Madisonville, TN | 15 mi | Apr 13 | Oct 24 |
| Oak Ridge, TN | 16 mi | Apr 5 | Nov 1 |
| Harriman, TN | 17 mi | Apr 3 | Nov 4 |
| Rockwood, TN | 20 mi | Apr 8 | Oct 31 |
| Maryville, TN | 21 mi | Apr 1 | Nov 2 |
| Alcoa, TN | 23 mi | Apr 1 | Nov 2 |
Frequently asked questions
When is the last frost in Loudon?
On average, the last spring frost (32°F) in Loudon is around April 5. In about 1 year in 10 it comes after April 21, and in 9 years in 10 it comes after March 19.
When is the first frost in Loudon?
The first fall frost (32°F) usually arrives around November 1. There’s a 10% chance of a freeze by October 20 and a 90% chance by November 15.
Can it frost in Loudon after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after April 18.
What growing zone is Loudon?
Loudon is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 37774. See growing zones in Tennessee.
More: all Tennessee frost dates · Tennessee growing zones · frost vs. freeze